Is the natural pain relief medicine celadrex good for back pain?

Probably not: Celadrex is a mixture of a number of herbal products, none of which are effective for chronic pain. According to my reference, it has been taken off the market.

Probably not: This sounds like someone is marketing a non-FDA approved nutritional supplement with a name that is designed to sound almost exactly like "Celebrex", an FDA-approved non-steroidal anti-inflammatory medication that can be effective for some pain conditions. I would avoid "celadrex" like the plague. The only way it might help for back pain is that you wallet will weigh less.